p^-^(24)Mg弹性散射对^(24)Mg原子核的α粒子结构的检验

A Study of the Alpha-particle Structure for ^(24)Mg Nucleus by p^-^(24)Mg Elastic Scattering

基于24Mg原子核的α粒子结构观点,利用已知的通过拟合电子散射实验得出的24Mg原子核基态电荷分布密度,得到24Mg原子核基态α粒子分布的形状因子。在Glauber多重散射理论框架下对入射能量为800MeV的p-24Mg弹性散射微分截面进行了研究计算。理论计算结果给出了合理的p-24Mg弹性散射截面角分布曲线,但截面量值与实验数据有一定的偏离。计算结果表明,本文基于24Mg原子核的α粒子结构观点得到24Mg原子核基态α粒子分布的形状因子有一定的合理性,但仍需进一步通过各类散射过程对24Mg原子核的6α、16O+α+α等结团结构进行比较研究,深入研究分析24Mg原子核的α结构特性。

Based on alpha-particle structure model of 24Mg nucleus,the form factor of alpha distribution in the 24Mg nucleus was obtained from the charge distribution.The differential cross section of the p-24Mg elastic scattering at 800 MeV have been calculated in the framework of Glauber multiple scattering theory.The results show that the mean features of the measured angular distribution of the cross section can be reasonably described by the alpha-particle structure model of 24Mg nucleus.But detailed fits to the experimental data,especially at the larger angle region,are discrepant.The different alpha-particle structure model of 24Mg nucleus should be further systematically investigated.